What is a high pressure natural gas line?

To reach Québec, the natural gas is carried over long distances by a transmission network. The steel pipes of this type of network are the largest ones, and the natural gas travels through them at high pressure (up to 30 times the pressure of a car tire).

The location of gas lines is indicated by visible markers which provide emergency information. Pipeline markers do not indicate the exact location of the pipe.

See a map of the gas network (PDF)

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Safety of the natural gas network

Énergir gives priority to the security of the natural gas network. A preventive maintenance program ensures its integrity. In fact, several control points are located along the entire network, which enables the real-time reading of data on the temperature of the natural gas, its pressure and flow. This is how the Énergir Control Centre practices continuous surveillance, 24/7, 365 days a year.
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How do you recognize a leak?

Some signs help you recognize a potential break in the natural gas network:
  • The smell of rotten eggs in some cases;
  • Dead or discoloured vegetation in grassed areas;
  • A noticeable release of dust from an opening in the ground;
  • A low whistle;
  • Continuous bubbling in humid or flooded areas;
  • The presence of a flame (if there is a leak and a source of ignition).

What do you do if there is a leak?

  • Evacuate the area and try to prevent anyone from having access;
  • Avoid flames and sparks;
  • If there is a fire, do not try to put it out;
  • Call 911.
Do you need more information?

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